R.B. Lemberg is a queer, bigender immigrant from Eastern Europe to the US. R.B.'s Birdverse novella The Four Profound Weaves (Tachyon, 2020) is a finalist for the Nebula, Ignyte, Locus, and World Fantasy awards, as well as an Otherwise Award honoree. R.B.'s poetry memoir Everything Thaws will be published by Ben Yehuda Press in 2022. Their stories and poems have appeared in Lightspeed Magazine’s Queers Destroy Science Fiction!, Beneath Ceaseless Skies, We Are Here: Best Queer Speculative Fiction 2020, Sisters of the Revolution: A Feminist Speculative Fiction Anthology, and many other venues. You can find R.B. on Twitter at @rb_lemberg, on Patreon at http://patreon.com/rblemberg, and at their websites rblemberg.net and birdverse.net.

Tamar Yellin is an author and teacher who lives in Yorkshire. Her first novel, The Genizah at the House of Shepher, won the 2007 Sami Rohr Prize for Jewish Literature. Tamar Yellin was raised in Leeds. Her father was a third-generation native of Jerusalem;[2] his father was Yitzhak Yaakov Yellin (1885–1964), one of the pioneers of the Hebrew language press in pre-state Israel. Her mother was the daughter of a Polish immigrant to England. Yellin attended the Leeds Girls' High School. She studied biblical and modern Hebrew language and Arabic language at the University of Oxford She spent 13 years writing her first novel, The Genizah at the House of Shepher (2005) and took two years to find a publisher. This was followed by a collection of 13 short stories, Kafka in Brontëland (2006) and another novel, Tales of the Ten Lost Tribes (2008). She also writes fiction for magazines, including The London Magazine and the Jewish Quarterly, and has published stories in two anthologies, The Slow Mirror and Other Stories: New Fiction by Jewish Writers (1996) and Mordecai's First Brush with Love: New Stories by Jewish Women in Britain (2004). Yellin is a teacher for the Interfaith Education Center, in which capacity she speaks to non-Jewish schoolchildren about Jewish religious practices.

Lavie Tidhar was raised on a kibbutz in Israel. He has travelled extensively since he was a teenager, living in South Africa, the UK, Laos, and the small island nation of Vanuatu. Tidhar began publishing with a poetry collection in Hebrew in 1998, but soon moved to fiction, becoming a prolific author of short stories early in the 21st century. Temporal Spiders, Spatial Webs won the 2003 Clarke-Bradbury competition, sponsored by the European Space Agency, while The Night Train (2010) was a Sturgeon Award finalist. Linked story collection HebrewPunk (2007) contains stories of Jewish pulp fantasy. He co-wrote dark fantasy novel The Tel Aviv Dossier (2009) with Nir Yaniv. The Bookman Histories series, combining literary and historical characters with steampunk elements, includes The Bookman (2010), Camera Obscura (2011), and The Great Game (2012). Standalone novel Osama (2011) combines pulp adventure with a sophisticated look at the impact of terrorism. It won the 2012 World Fantasy Award, and was a finalist for the Campbell Memorial Award, British Science Fiction Award, and a Kitschie. His latest novels are Martian Sands and The Violent Century. Much of Tidhar’s best work is done at novella length, including An Occupation of Angels (2005), Cloud Permutations (2010), British Fantasy Award winner Gorel and the Pot-Bellied God (2011), and Jesus & the Eightfold Path (2011). Tidhar advocates bringing international SF to a wider audience, and has edited The Apex Book of World SF (2009) and The Apex Book of World SF 2 (2012). He is also editor-in-chief of the World SF Blog, and in 2011 was a finalist for a World Fantasy Award for his work there. He also edited A Dick and Jane Primer for Adults (2008); wrote Michael Marshall Smith: The Annotated Bibliography (2004); wrote weird picture book Going to The Moon (2012, with artist Paul McCaffery); and scripted one-shot comic Adolf Hitler’s I Dream of Ants! (2012, with artist Neil Struthers). Tidhar lives with his wife in London.

Alexander C. Irvine is an American fantasist and science fiction writer. He also writes under the pseudonym Alex Irvine. He first gained attention with his novel A Scattering of Jades and the stories that would form the collection Unintended Consequences. He has also published the Grail quest novel One King, One Soldier, and the World War II-era historical fantasy The Narrows. In addition to his original works, Irvine has published Have Robot, Will Travel, a novel set in Isaac Asimov's positronic robot milieu; and Batman: Inferno, about the DC Comics superhero. His academic background includes an M.A. in English from the University of Maine and a PhD from the University of Denver. He is an assistant professor of English at the University of Maine. He also worked for a time as a reporter at the Portland Phoenix.